Relatively developed countries, the gear pump industry in China started late, but people pointed out that gear pumps in our country, you can advise construction professionals to connect the basement of high-rise residential. Industry may use the advantage of backward to achieve leaps and bounds. In the water pump industry, there are many examples of products that realize technological leaps and bounds, such as the double-shell high pressure boiler feed pump of Shanghai Pump Factory, the slurry pump of Shijiazhuang Pump Factory, the screw pump of Tianjin Pump Machinery Group Co., Ltd., etc. These Products from the technical level speaking with the international level close to some companies use foreign advanced technology to transform their own products in order to achieve technological leaps.Such as Shenyang Pump Factory to use advanced foreign technology to improve AY-type pump rotor stiffness, anti-bite material Of the application has been leaps and bounds; AY-type pump to replace the Y-pump to occupy most of the domestic pump market.In the field of high-tech industries, as long as technically even a small step ahead, it is possible to occupy this large Part of the market.Therefore, 20 years of reform and opening up, China's pump industry has achieved technological leaps and bounds, but also only by implementing technology by leaps and bounds, in order to continue to narrow the gap with developed countries, to catch up with or exceed the advanced level abroad. In a multi-building plot, it is uneconomical to invest a large amount of investment in each building with pump rooms, and the maintenance and management of the equipment requires a lot of manpower and material resources. , Generally consider setting centralized pump room, centralized pump room settings can refer to the Shanghai "Civil Building Water Fire Extinguishing System Design Code" (DGJ08-94-2001) Article 6.5.3 of the relevant provisions: gear pump water supply services Radius should not be greater than 150m, pump room water pressure should not normally be greater than 0.45MPa. In the actual design, should be based on the different circumstances of each plots flexible use. (1) For example, a factory area plots, the red line within the scope of a number of multi-storey plant, multi-storey dormitory, multi-storey office building .In this case the centralized pump room is more economical, to meet the water supply service radius of not more than 150m Under the premise, a centralized pump house can be set up in the proper position of the load center in the plant area, which is more reasonable due to the fact that the plant area generally covers a large area. (2) For example, a multi-storey or small high-rise residential district may set up one or more centralized pumping houses according to the different development periods of developers and the height of the storey and the size of the storage tanks. Due to the large number of residential quarters , So the water pump room storage pond covers a relatively large area for a residential quarters, the centralized pump room is located in the commercial and residential buildings in the lower or underground garage than in the building outside the single set of gear Oil pump room is more economical.Shanghai "Residential Design Standards" (DGJ08-20-2001) Article 1, Article No. 0.0.19 stipulates: There should be no sewage pipes inside the pump house. "Secondary water supply facilities hygiene specification" (GBl7051- 1997) Article 5.5 stipulates that there shall be no seepage pits and piles of trash and other pollutants within 10m around the reservoir, there shall be no sewage pipelines and pollutants within 2m around the water tank, and the centralized pump room in the basement may be under these conditions The effective area used is quite limited.Generally speaking, it is more reasonable to set centralized pumping station in the underground garage because the garage has large columnar spacing, less shear wall, less sewage pipeline around the pump house and available pump room area Big. (3) For example, in a high-rise residential area, if the basement of an adjacent building is not connected, it is not suitable to set centralized pumping house because the pressure of outlet water in high-rise residential pumping house is generally greater than 0.45MPa; , The overall impact on the overall pipeline district, but also a wide range of use of trench, but also greatly reduce the quality of the district. Concentrated gear pump pipe buried in the casing, is not conducive to the maintenance and maintenance of the pipeline. Take Shanghai For example, the ownership of water supply pipelines in residential buildings belongs to developers and water supply pipelines outside residential areas. Ownership belongs to the water company. Based on the accumulated experience of many years of operation, the water company has set its own industry standard for the setting of overall pipelines. Therefore, If the basement is not connected, it is not advisable to set up a centralized pump house. If the basement of an adjacent building is connected, a centralized pump house can be set up because the pump pipe is taken inside the house and the internal maintenance and maintenance of the house Much easier, but also has no effect on the overall district pipeline integration, so if high-rise residential areas to be set.